Climate dynamics    

Climate Dynamics
Climate dynamics are theories about how the climate is developing in time. In this case the analysis is based on analysis of the power spectrum in data series and the theory of coupled oscillators. The power density spectrum in time series from nature is falling by about 1/frequency. This implicates that time series from nature has no stationary mean value. The mean value is dependent on the time series scaling range, and the climate state is dependent on the phase relations between a spectrum of causes.

Coupled oscillators
In this analysis we may understand the forced gravitation oscillation between the earth, sun and the moon as a forced coupled oscillation system to the earth. The tide and the earth rotation responds as a non-linear coupled oscillation to the forced gravity periods from the moon and the sun. This is a complex oscillation in periods between hours and thousands of years. The forced gravitation introduces a tidal mixing in the Atlantic Ocean. This tidal mixing introduces temperature and salinity fluctuations that influences climate and the eco system. This research has focus on the respond from harmonics from the 18.6 yr lunar nodal amplitude cycle and the 9.3 yr phase cycle.


North Atlantic water temperature
 

This figure shows North Atlantic water is measured in the Scotland – Faroe channel by Fisheries Research Service (FRS), Aberdeen in Scotland. It represents one of the longest data series in the world and a good climate indicator for climate dynamics in northern Europe.

A wavelet analysis of the data series shows that major temperature fluctuations are correlated to the lunar nodal tidal cycles of about 9.3 and 18.6 years. This analysis indicates that long tides may have an important regional influence on climate change in the Northern part of Europe  (Yndestad, Turrell, Ozhigin, 2008).

Literature
2008: Yndestad Harald; Turrell, William R and Ozhigin, Vladimir: Lunar nodal tide effects on variability of sea level,
          temperature and salinity in the Faroe-Shetland Channel and the Barents Sea.
          Deep Sea Research. 55/12. pp 1201-1217.

2008: Yndestad, H: Prognoser for tilsig til vannkraft basert på neurale nettverk. Rapport 2008/01. Høgskolen i Ålesund.
 
2007: Yndestad, H: "The Lunar nodal tide influence on the climate dynamics and the eco system
          dynamics in the the Barents Sea". Ecosystem Dynamics in the Norwegian Sea and Barents Sea.
          ECONORTH Symposium 12.th-15. March 2007. Tromsø. Norway.

2006:   Yndestad, H: "Possible Lunar nodal tide effects on climate and the eco system in the Nordic Seas
           and the Barents Sea". ICES annual conference. CM 2006/C:02. Climate variability in the relation
           to previous decades: physical and biological consequences. Maastricht, 19-23 Sept 2006.

2006:   Yndestad, H: "The Arctic Ocean as a coupled oscillating system to the forced
           18.6 yr lunar nodal cycle". 20 Years of Nonlinear Dynamics in Geosciences.
           American Meteorological Society & European Geosciences Union.
           Rhodes, Greece. June 11-16, 2006.     
                         
2006:   Yndestad, H: The influence of the nodal cycle on Arctic climate. ICES Journal of Marine Science.
                               63: 401-420 (2006).

2005:   Yndested, H: Prognoser for tilsig til vannkraft. HiÅ-Rapport 2005/01.

2005:   Yndestad, H: Månens innvirkning på klimaet. Artikkel Innsikt i Sunnmørsposten. 7.mai 2005.

2005:   Yndestad, H: Temporal linkages between the lunar nodal tide and North Atlantic time series.
           European Geophysical Union meeting. CL23 North Atlantic climate variability.
           Vienna 24-29 April 2005.    Poster.

2005:  Yndestad: H: The cause and the effect of the 18.6 yr nodal tide in the Barents Sea.
           GLOBEC International Newsletter. Vol.11, No. 1. April 2005.      
 
2004:   Yndestad, H: The lunar nodal cycle influence on the Barents Sea.
           Doctoral Thesis at NTNU 2004:132.
          
2004:   Yndestad, H: The reponce of the ecosystem of the Nordic Sea to climate.
           Given Trial. 25.11.2004. NTNU.

2004:   Yndestad, H: The Lunar nodal cycle influence on the Barents Sea.
           Chosen Trial. 25.11.2004. NTNU.

More papers

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Web sites

• Mean lunar and nodal periods 

• Geological Cycles

• Some Cycle reports

• Dr. Irv Bromberg: The Length of the Lunar nodal Cycle

 Last updata: 16.08.2008 by prof. Harald Yndestad
Aalesund university college, 6025 Aalesund,   Norway